Audio stereo system



FIG. 1 is a front elevational view of an audio stereo system showing our new design;

FIG. 2 is front elevational view thereof, with a remote control device shown in broken line;

FIG. 3 is a top plan view thereof;

FIG. 4 is a top plan view thereof, with a remote control device shown in broken line;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is a bottom plan thereof.

The broken line showing on FIGS. 2 and 4 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an audio stereo system, as shown and described. 